US20030042026A1 - Controllable production well packer - Google Patents

Controllable production well packer Download PDF

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Publication number
US20030042026A1
US20030042026A1 US10/220,252 US22025202A US2003042026A1 US 20030042026 A1 US20030042026 A1 US 20030042026A1 US 22025202 A US22025202 A US 22025202A US 2003042026 A1 US2003042026 A1 US 2003042026A1
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Prior art keywords
packer
well
electrically
accordance
piping structure
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Granted
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US10/220,252
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US7322410B2 (en
Inventor
Harold Vinegar
Robert Burnett
William Savage
Frederick Carl Jr.
John Hirsch
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Shell USA Inc
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Individual
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Priority to US10/220,252 priority Critical patent/US7322410B2/en
Priority claimed from PCT/US2001/006984 external-priority patent/WO2001065067A1/en
Assigned to SHELL OIL COMPANY reassignment SHELL OIL COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VINEGAR, HAROLD J., BURNETT, ROBERT REX, CARL JR., FREDERICK GORDON, HIRSCH, JOHN MICHELE, SAVAGE, WILLIAM MOUNTJOY
Publication of US20030042026A1 publication Critical patent/US20030042026A1/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0085Adaptations of electric power generating means for use in boreholes
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/129Packers; Plugs with mechanical slips for hooking into the casing
    • E21B33/1294Packers; Plugs with mechanical slips for hooking into the casing characterised by a valve, e.g. a by-pass valve
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12Methods or apparatus for controlling the flow of the obtained fluid to or in wells

Definitions

  • the present invention relates to a controllable production well packer.
  • a petroleum production well packer comprising an electrically powered device, in which the device may comprise an electrically controllable valve, a communications and control module, a sensor, a modem, a tracer injection module, or any combination thereof.
  • Petroleum wells e.g., oil and/or gas wells
  • the fluid-bearing zones may produce saline or clear water, oil, gas, or a mixture of these components.
  • FIG. 1 A typical hydraulically set production packer of the prior art is schematically shown in FIG. 1.
  • Packers are mechanical devices that close the annulus between the production tubing and the casing, and seal to both.
  • Packers are typically installed at the time of well. completion by attaching them to a tubing string as it is lowered into the well. Thus, during placement, the packer must pass freely within the casing.
  • a hydraulic actuator energized and controlled from the surface
  • operates the sealing mechanism of the packer operates the sealing mechanism of the packer, which clamps the packer to the casing and effects a fluid-tight seal in the annular space between the tubing and the casing.
  • Packers may provide complete isolation between the annular spaces above and below them, or may be equipped with one or more preset mechanically-actuated valves to control flow past them.
  • control valves When control valves are included, however, their settings can only be altered by mechanically inserting a slick-line tool, which is inconvenient, slow, and relatively costly. Additionally, when there are multiple zones and multiple packers it is often impossible or impractical to reach the lowermost packers with a slick-line tool. This lack of a fast and inexpensive method for controlling valves in a packer is a constraint on well design and production operations.
  • a packer adapted for use in a petroleum well wherein the packer comprises an electrically powered device
  • the electrically powered device may comprise an electrically controllable valve adapted to control fluid communication from one side of the packer to another side of the packer when the packer is operably installed.
  • the electrically powered device may further comprise a communications and control module being electrically connected to the electrically controllable valve, wherein the module comprises a modem adapted to receive control commands encoded within communication signals.
  • the module can be adapted to decode the control commands received by the modem and control the movement of the valve using the control commands when the packer is operably installed.
  • the electrically powered device may comprise a sensor adapted to detect at least one physical characteristic of a surrounding environment and generate data corresponding to the physical characteristic, as well as a modem adapted to receive the data from the sensor and electrically transmit the data in the form of an electrical communication signal.
  • the electrically powered device can comprise an electrically controllable valve, a sensor, a modem, a communications and control module, a tracer injection module, or any combination thereof.
  • a petroleum production well incorporating the packer described above.
  • the petroleum well comprises a piping structure, a source of time-varying current, an electrical return, an induction choke, and the packer.
  • the piping structure of the well comprises an electrically conductive portion extending along at least part of the piping structure.
  • the piping structure can comprise a production tubing string of the well.
  • the source of time-varying current comprises two source terminals. A first of the source terminals is electrically connected to the electrically conductive portion of the piping structure.
  • the electrical return electrically connects between the electrically conductive portion of the piping structure and a second of the source terminals of the time-varying current source.
  • the electrical return can comprise a well casing of the well, part of the packer, another packer, and/or a conductive fluid within the well.
  • the induction choke is located about part of the electrically conductive portion of the piping structure at a location along the piping structure between the electrical connection location for the first source terminal and the electrical connection location for the electrical return, such that a voltage potential is formed between the electrically conductive portion of the piping structure on a source-side of the induction choke, and the electrically conductive portion of the piping structure on an electrical-return-side of the induction choke as well as the electrical return when time-varying current flows through the electrically conductive portion of the piping structure.
  • the induction choke can comprise a ferromagnetic material.
  • the induction choke need not be powered when its size, geometry, and magnetic properties can provide sufficient magnetic inductance for developing the voltage potential desired.
  • the electrically powered device of the packer is electrically connected across the voltage potential such that part of the time-varying current is routed through the device due to the induction choke when the time-varying current flows through the electrically conductive portion of the piping structure.
  • a method of producing petroleum products from a petroleum well comprising an electrically powered packer is provided.
  • a conventional petroleum well includes a cased wellbore having a tubing string positioned within and longitudinally extending within the casing.
  • a controllable packer is coupled to the tubing to provide a seal of the annular space between the tubing and casing.
  • a valve in the packer (and/or other devices, such as sensors) is powered and controlled from the surface.
  • Communication signals and power are sent from the surface using the tubing and casing as conductors.
  • At least one induction choke is coupled about the tubing downhole to magnetically inhibit alternating current flow through the tubing at a choke.
  • An insulating tubing joint, another induction choke, or another insulating means between the tubing and casing can be located at the surface above a location where current and communication signals are imparted to the tubing. Hence, most of the alternating current is contained between the downhole choke and the insulating tubing joint, or between the chokes when two chokes are used.
  • a preferred embodiment utilizes the production tubing and the well casing as the electrical conduction path between the surface and downhole equipment.
  • controllable packer in accordance with the present invention may incorporate sensors, with data from the sensors being received in real time at the surface.
  • electrically motorized mechanical components such as flow control valves
  • packer flow control valves the control of such components in the controllable packer hereof is near real time, allowing packer flow control valves to be opened, closed, adjusted, or throttled constantly to contribute to the management of production.
  • a surface computer having a master modem can impart a communication signal to the tubing, and the communication signal is received at a slave modem downhole, which is electrically connected to or within the controllable packer.
  • the communication signal can be received by the slave modem either directly or indirectly via one or more relay modems.
  • electric power can be input into the tubing string and received downhole to power the operation of sensors or other devices in the controllable packer.
  • the casing is used as a conductor for the electrical return.
  • a controllable valve in the packer regulates the fluid communication in the annulus between the casing and tubing.
  • the electrical return path can be provided along part of the controllable packer, and preferably by the expansion of the expansion slips into contact with the casing.
  • the electrical return path may be via a conductive centralizer around the tubing which is insulated in its contact with the tubing, but is in electrical contact with the casing and electrically connected to the device in the packer.
  • controllable packer includes one or more sensors downhole which are preferably in contact with the downhole modem and communicate with the surface computer via the tubing and/or well casing.
  • sensors as temperature, pressure, acoustic, valve position, flow rates, and differential pressure gauges can be advantageously used in many situations.
  • the sensors supply measurements to the modem for transmission to the surface or directly to a programmable interface controller operating a downhole device, such as controllable valve for controlling the fluid flow through the packer.
  • ferromagnetic induction chokes are coupled about the tubing to act as a series impedance to current flow on the tubing.
  • an upper ferromagnetic choke is placed around the tubing below the casing hanger, and the current and communication signals are imparted to the tubing below the upper ferromagnetic choke.
  • a lower ferromagnetic choke is placed downhole around the tubing with the controllable packer electrically coupled to the tubing above the lower ferromagnetic choke, although the controllable packer may be mechanically coupled to the tubing below the lower ferromagnetic choke instead.
  • a surface computer is coupled via a surface master modem and the tubing to the downhole slave modem of the controllable packer.
  • the surface computer can receive measurements from a variety of sources (e.g., downhole sensors), measurements of the oil output from the well, and measurements of the compressed gas input to the well in the case of a gas lift well. Using such measurements, the computer can compute desired positions of the controllable valve in the packer, and more particularly, the optimum amount of fluid communication to permit into the annulus inside the casing.
  • Construction of such a petroleum well is designed to be as similar to conventional construction methodology as possible. That is, after casing the well, a packer is typically set to isolate each zone. In a production well, there may be several oil producing zones, water producing zones, impermeable zones, and thief zones. It is desirable to prevent or permit communication between the zones.
  • the tubing string is fed through the casing into communication with the production zone, with controllable packers defining the production zone. As the tubing string is made up at the surface, a lower ferromagnetic choke is placed around one of the conventional tubing strings for positioning above the lowermost controllable packer.
  • Controllable gas lift valves or sensor pods also may be coupled to the tubing as desired by insertion in a side pocket mandrel (tubing conveyed) and corresponding induction chokes as needed.
  • the tubing string is made up to the surface where an upper ferromagnetic induction choke is again placed around the tubing string below the casing hanger. Communication and power leads are then connected to the tubing string below the upper choke.
  • an electrically insulating joint is used instead of the upper induction choke.
  • a sensor and communication pod can be incorporated into the controllable packer of the present invention without the necessity of including a controllable valve or other control device. That is, an electronics module having pressure, temperature or acoustic sensors, power supply, and a modem can be incorporated into the packer for communication to the surface computer using the tubing and casing as conductors.
  • FIG. 1 is a schematic showing a typical packer of the prior art
  • FIG. 2 is a schematic showing a petroleum production well in accordance with a preferred embodiment of the present invention.
  • FIG. 3 is a simplified electrical schematic of the embodiment shown in FIG. 2;
  • FIG. 4 is an enlarged schematic showing a controllable packer, from FIG. 2, comprising an electrically controllable valve.
  • a “piping structure” can be one single pipe, a tubing string, a well casing, a pumping rod, a series of interconnected pipes, rods, rails, trusses, lattices, supports, a branch or lateral extension of a well, a network of interconnected pipes, or other similar structures known to one of ordinary skill in the art.
  • the preferred embodiment makes use of the invention in the context of a petroleum well where the piping structure comprises tubular, metallic, electrically-conductive pipe or tubing strings, but the invention is not so limited.
  • an electrically conductive piping structure is one that provides an electrical conducting path from a first portion where a power source is electrically connected to a second portion where a device and/or electrical return is electrically connected.
  • the piping structure will typically be conventional round metal tubing, but the cross-section geometry of the piping structure, or any portion thereof, can vary in shape (e.g., round, rectangular, square, oval) and size (e.g., length, diameter, wall thickness) along any portion of the piping structure.
  • a piping structure must have an electrically conductive portion extending from a first portion of the piping structure to a second portion of the piping structure, wherein the first portion is distally spaced from the second portion along the piping structure.
  • first portion and second portion are each defined generally to call out a portion, section, or region of a piping structure that may or may not extend along the piping structure, that can be located at any chosen place along the piping structure, and that may or may not encompass the most proximate ends of the piping structure.
  • the descriptors “upper”, “lower”, “uphole” and “downhole” are relative and refer to distance along hole depth from the surface, which in deviated or horizontal wells may or may not accord with vertical elevation measured with respect to a survey datum.
  • modem is used herein to generically refer to any communications device for transmitting and/or receiving electrical communication signals via an electrical conductor (e.g., metal).
  • the term “modem” as used herein is not limited to the acronym for a modulator (device that converts a voice or data signal into a form that can be transmitted)/demodulator (a device that recovers an original signal after it has modulated a high frequency carrier).
  • the term “modem” as used herein is not limited to conventional computer modems that convert digital signals to analog signals and vice versa (e.g., to send digital data signals over the analog Public Switched Telephone Network).
  • a sensor outputs measurements in an analog format
  • measurements may only need to be modulated (e.g., spread spectrum modulation) and transmitted—hence no analog/digital conversion needed.
  • a relay/slave modem or communication device may only need to identify, filter, amplify, and/or retransmit a signal received.
  • valve means the absence of a conventional, insulated wire conductor e.g. extending from a downhole device to the surface. Using the tubing and/or casing as a conductor is considered “wireless.”
  • the term “valve” as used herein generally refers to any device that functions to regulate the flow of a fluid. Examples of valves include, but are not limited to, bellows-type gas-lift valves and controllable gas-lift valves, each of which may be used to regulate the flow of lift gas into a tubing string of a well.
  • the internal workings of valves can vary greatly, and in the present application, it is not intended to limit the valves described to any particular configuration, so long as the valve functions to regulate flow.
  • Some of the various types of flow regulating mechanisms include, but are not limited to, ball valve configurations, needle valve configurations, gate valve configurations, and cage valve configurations. The methods of installation for valves discussed in the present application can vary widely.
  • electrically controllable valve generally refers to a “valve” (as just described) that can be opened, closed, adjusted, altered, or throttled continuously in response to an electrical control signal (e.g., signal from a surface computer or from a downhole electronic controller module).
  • an electrical control signal e.g., signal from a surface computer or from a downhole electronic controller module.
  • the mechanism that actually moves the valve position can comprise, but is not limited to: an electric motor; an electric servo; an electric solenoid; an electric switch; a hydraulic actuator controlled by at least one electrical servo, electrical motor, electrical switch, electric solenoid, or combinations thereof; a pneumatic actuator controlled by at least one electrical servo, electrical motor, electrical switch, electric solenoid, or combinations thereof; or a spring biased device in combination with at least one electrical servo, electrical motor, electrical switch, electric solenoid, or combinations thereof.
  • An “electrically controllable valve” may or may not include a position feedback sensor for providing a feedback signal corresponding to the actual position of the valve.
  • the term “sensor” as used herein refers to any device that detects, determines, monitors, records, or otherwise senses the absolute value of or a change in a physical quantity.
  • a sensor as described herein can be used to measure physical quantities including, but not limited to: temperature, pressure (both absolute and differential), flow rate, seismic data, acoustic data, pH level, salinity levels, valve positions, or almost any other physical data.
  • FIG. 1 is a schematic showing a conventional hydraulically set production packer 20 of the prior art set within a well casing 22 of a well.
  • the packer 20 of FIG. 1 is threaded to a production tubing string 24 .
  • the conventional packer 20 has a tail piece 26 that may terminate with an open or closed end for the lowest packer in the completed well, or the tail piece 26 may be threaded onto tubing (not shown) that passes to lower regions of the well.
  • the conventional packer 20 has a section of slips 28 and a seal section 30 . Both the slips 28 and the seal section 30 can pass freely inside the well casing 22 during placement, and are operated by a hydraulic actuator 32 .
  • the hydraulic actuator 32 When the packer 20 is at its final location in the casing 22 , the hydraulic actuator 32 is used to exert mechanical forces on the slips 28 and the seals 30 causing them to expand against the casing.
  • the slips 28 lock the packer 20 in place by gripping the internal surface of the casing 22 so that the packer cannot be displaced by differential pressure between the spaces above and below the packer.
  • the seal section 30 creates a liquid-tight seal between the spaces above and below the packer 20 .
  • the hydraulic actuator 32 is operated using high-pressure oil supplied from the surface (not shown) by a control tube 34 .
  • the conventional packer 20 does not comprise an electrically powered device.
  • FIG. 2 is a schematic showing a petroleum production well 38 in accordance with a preferred embodiment of the present invention.
  • the petroleum production well 38 shown in FIG. 2 is similar to a conventional well in construction, but with the incorporation of the present invention.
  • a packer 40 comprising an electrically powered device 42 is placed in the well 38 in the same manner as a conventional packer 20 would be—to separate zones in a formation.
  • the electrically powered device 42 of the packer 40 comprises an electrically controllable valve 44 that acts as a bypass valve, as shown in more detail in FIG. 4 and described further below.
  • the piping structure comprises part of a production tubing string 24
  • the electrical return comprises part of a well casing 22 .
  • An insulating tubing joint 146 and a ferromagnetic induction choke 48 are used in this preferred embodiment.
  • the insulating joint 146 is incorporated close to the wellhead to electrically insulate the lower sections of tubing 24 from casing 22 .
  • the insulating joint 146 prevents an electrical short-circuit between the lower sections of tubing 24 and casing 22 at the tubing hanger 46 .
  • the hanger 46 provides mechanical coupling and support of the tubing 24 by transferring the weight load of the tubing 24 to the casing 22 .
  • the induction choke 48 is attached about the tubing string 24 at a second portion 52 downhole above the packer 40 .
  • a computer system 56 comprising a master modem 58 and a source of time-varying current 60 is electrically connected to the tubing string 24 below the insulating tubing joint 146 by a first source terminal 61 .
  • the first source terminal 61 is insulated from the hanger 46 where it passes through it.
  • a second source terminal 62 is electrically connected to the well casing 22 , either directly (as in FIG. 2) or via the hanger 46 (arrangement not shown).
  • another induction choke (not shown) can be placed about the tubing 24 above the electrical connection location for the first source terminal 61 to the tubing.
  • the time-varying current source 60 provides the current, which carries power and communication signals downhole.
  • the time-varying current is preferably alternating current (AC), but it can also be a varying direct current (DC).
  • the communication signals can be generated by the master modem 58 and embedded within the current produced by the source 60 .
  • the communication signal is a spread spectrum signal, but other forms of modulation could be used in alternative.
  • the electrically powered device 42 in the packer 40 comprises two device terminals 71 , 72 , and there can be other device terminals as needed for other embodiments or applications.
  • a first device terminal 71 is electrically connected to the tubing 24 on a source-side 81 of the induction choke 48 , which in this case is above the induction choke.
  • a second device terminal 72 is electrically connected to the tubing 24 on an electrical-return-side, 82 of the induction choke 48 , which in this case is below the induction choke.
  • the slips 28 of the packer 40 provide the electrical connection between the tubing 24 and the well casing 22 .
  • the electrical connection between the tubing 24 and the well casing 22 can be accomplished in numerous ways, some of which can be seen in the Related Applications, including (but not limited to): another packer (conventional or controllable); conductive fluid in the annulus between the tubing and the well casing; a conductive centralizer; or any combination thereof.
  • another packer conventional or controllable
  • conductive fluid in the annulus between the tubing and the well casing a conductive centralizer; or any combination thereof.
  • a conductive centralizer or any combination thereof.
  • FIG. 3 illustrates a simplified electrical schematic of the electrical circuit formed in the well 38 of FIG. 2.
  • the insulating tubing joint 146 and the induction choke 48 effectively create an isolated section of the tubing string 24 to contain most of the time-varying current between them. Accordingly, a voltage potential develops between the isolated section of tubing 24 and the well casing 22 when AC flows through the tubing string. Likewise, the voltage potential also forms between tubing 24 on the source-side 81 of the induction choke 48 and the tubing 24 on the electrical-return-side 82 of the induction choke 48 when AC flows through the tubing string.
  • the electrically powered device 42 in the packer 40 is electrically connected across the voltage potential between the source-side 81 and the electrical-return-side 82 of the tubing 24 .
  • the device 42 can be electrically connected across the voltage potential between the tubing 24 and the casing 22 , or the voltage potential between the tubing 24 and part of the packer 40 (e.g., slips 28 ), if that part of the packer is electrically contacting the well casing 22 .
  • part of the current that travels through the tubing 24 and casing 22 is routed through the device 42 due to the induction choke 48 .
  • centralizers which are installed on the tubing between isolation device 47 and choke 48 must not provide an electrically conductive path between tubing 24 and casing 22 .
  • Suitable centralizers may be composed of solid molded or machined plastic, or may be of the bow-spring type provided these are furnished with appropriate insulating elements. Many suitable and alternative design implementations of such centralizers will be clear to those of average skill in the art.
  • FIG. 4 shows more details of the packer 40 of FIG. 2, it is seen that the controllable packer 40 is similar to the conventional packer 20 (shown in FIG. 1), but with the addition of an electrically powered device 42 comprising an electrically controllable valve 44 and a communications and control module 84 .
  • the communications and control module 84 is powered from and communicates with the computer system 56 at the surface 54 via the tubing 24 and/or the casing 22 .
  • the communications and control module 84 may comprise a modem 86 , a power transformer (not shown), a microprocessor (not shown), and/or other various electronic components (not shown) as needed for an embodiment.
  • the communications and control module 84 receives electrical signals from the computer system 56 at the surface 54 and decodes commands for controlling the electrically controlled valve 44 , which acts as a bypass valve. Using the decoded commands, the communications and control module 84 controls a low current electric motor that actuates the movement of the bypass valve 44 . Thus, the valve 44 can be opened, closed, adjusted, altered, or throttled continuously by the computer system 56 from the surface 54 via the tubing 24 and well casing 22 .
  • the bypass valve 44 of FIG. 4 controls flow through a bypass tube 88 , which connects inlet and outlet ports 90 , 92 at the bottom and top of the packer 40 .
  • the ports 90 , 92 communicate freely with the annular spaces 94 , 96 (between the casing 22 and the tubing 24 ), above and below the packer 40 .
  • the bypass control valve 44 therefore controls fluid exchange between these spaces 94 , 96 , and this exchange may be altered in real time using commands sent from the computer system 56 and received by the controllable packer 40 .
  • the mechanical arrangement of the packer 40 depicted in FIG. 4 is illustrative, and alternative embodiments having other mechanical features providing the same functional needs of a packer (i.e., fluidly isolating and sealing one casing section from another casing section in a well, and in the case of a controllable packer, regulating and controlling fluid flow between these isolated casing sections) are possible and encompassed within the present invention.
  • the inlet and outlet ports 90 , 92 may be exchanged to pass fluids from the annular space 94 above the packer 40 to the space 96 below the packer.
  • the communications and control module 84 and the bypass control valve 44 may be located in upper portion of the packer 40 , above the slips 28 .
  • the controllable packer 40 may also comprise sensors (not shown) electrically connected to or within the communication and control module 84 , to measure pressures or temperatures in the annuli 94 , 96 or within the production tubing 24 . Hence, the measurements can be transmitted to the computer system 56 at the surface 54 using the communications and control module 84 , providing real time data on downhole conditions. Also the setting and unsetting mechanism of the packer slips may be actuated by one or more motors driven and controlled by power and commands received by module 84 .
  • the electrically powered device 42 of the packer 40 may comprise: a modem 86 ; a sensor (not shown); a microprocessor (not shown); a packer valve 44 ; a tracer injection module (not shown); an electrically controllable gas-lift valve (e.g., for controlling the flow of gas from the annulus to inside the tubing) (not shown); a tubing valve (e.g., for varying the flow of a tubing section, such as an application having multiple branches or laterals) (not shown); a communications and control module 84 ; a logic circuit (not shown); a relay modem (not shown); other electronic components as needed (not shown); or any combination thereof.
  • a modem 86 e.g., a sensor (not shown); a microprocessor (not shown); a packer valve 44 ; a tracer injection module (not shown); an electrically controllable gas-lift valve (e.g., for controlling the flow of gas from the annulus to inside the tubing) (not
  • controllable packers and/or multiple induction chokes there may be multiple controllable packers and/or multiple induction chokes.
  • Such electrical insulation of a packer may be achieved in various ways apparent to one of ordinary skill in the art, including (but not limited to): an insulating sleeve about the tubing at the packer location; a rubber or urethane portion at the radial extent of the packer slips; an insulating coating on the tubing at the packer location; forming the slips from non-electrically-conductive materials; other known insulating means; or any combination thereof.
  • the present invention also can be applied to other types of wells (other than petroleum wells), such as a water well.

Abstract

The existence and rate of corrosion in a section of a well tubing or well casing is determined and monitored by installing at predetermined locations as the string is placed in the well bore, sections of pipe (20) that have been fitted with an array of piezoelectric transducers (26) and a microprocessor (28) that controls signals going to and from each array of transducers and signals going to and received from controls and intrumentation apparatus located at the earth's surface. The microprocessors at varying locations along the string are electrically connected to the surface control and instrumentation apparatus by conductor cables and/or by wireless means using the pipe string as the conductive path for electrical signals.

Description

    CROSS-REFERENCES TO RELATED APPLICATIONS
  • This application claims the benefit of the following U.S. Provisional Applications, all of which are hereby incorporated by reference: [0001]
    COMMONLY OWNED AND PREVIOUSLY FILED
    U.S. PROVISIONAL PATENT APPLICATIONS
    T&K # Ser. No. Title Filing Date
    TH 1599 60/177,999 Toroidal Choke Inductor for Jan. 24, 2000
    Wireless Communication and
    Control
    TH 1600 60/178,000 Ferromagnetic Choke in Jan. 24, 2000
    Wellhead
    TH 1602 60/178,001 Controllable Gas-Lift Well Jan. 24, 2000
    and Valve
    TH 1603 60/177,883 Permanent, Downhole, Wire- Jan. 24, 2000
    less, Two-Way Telemetry
    Backbone Using Redundant
    Repeater, Spread Spectrum
    Arrays
    TH 1668 60/177,998 Petroleum Well Having Jan. 24, 2000
    Downhole Sensors,
    Communication, and Power
    TH 1669 60/177,997 System and Method Jan. 24, 2000
    for Fluid Flow
    Optimization
    TS 6185 60/181,322 A Method and Apparatus for Feb. 9, 2000
    the Optimal Predistortion
    of an Electromagnetic Signal
    in a Downhole Communica-
    tions System
    TH 1599x 60/186,376 Toroidal Choke Inductor for Mar. 2, 2000
    Wireless Communication and
    Control
    TH 1600x
    60/186,380 Ferromagnetic Choke in Mar. 2, 2000
    Wellhead
    TH 1601 60/186,505 Reservoir Production Control Mar. 2, 2000
    from Intelligent Well Data
    TH 1671 60/186,504 Tracer Injection in a Pro- Mar. 2, 2000
    duction Well
    TH 1672 60/186,379 Oilwell Casing Electrical Mar. 2, 2000
    Power Pick-Off Points
    TH 1673 60/186,394 Controllable Production Mar. 2, 2000
    Well Packer
    TH 1674 60/186,382 Use of Downhole High Mar. 2, 2000
    Pressure Gas in a Gas
    Lift Well
    TH 1675 60/186,503 Wireless Smart Well Casing Mar. 2, 2000
    TH 1677 60/186,527 Method for Downhole Power Mar. 2, 2000
    Management Using
    Energization from Distributed
    Batteries or Capacitors
    with Reconfigurable
    Discharge
    TH 1679 60/186,393 Wireless Downhole Well Mar. 2, 2000
    Interval Inflow and Injection
    Control
    TH 1681 60/186,394 Focused Through-Casing Mar. 2, 2000
    Resistivity Measurement
    TH 1704 60/186,531 Downhole Rotary Hydraulic Mar. 2, 2000
    Pressure for Valve
    Actuation
    TH 1705 60/186,377 Wireless Downhole Measure- Mar. 2, 2000
    ment and Control For
    Optimizing Gas Lift Well
    and Field Performance
    TH 1722 60/186,381 Controlled Downhole Mar. 2, 2000
    Chemical Injection
    TH 1723 60/186,378 Wireless Power and Mar. 2, 2000
    Communications Cross-Bar
    Switch
  • The current application shares some specification and figures with the following commonly owned and concurrently filed applications, all of which are hereby incorporated by reference: [0002]
    COMMONLY OWNED AND CONCURRENTLY FILED U.S PATENT
    APPLICATIONS
    Filing
    T&K # Ser. No. Title Date
    TH 1601US 09/                     Reservoir Production Control
    from Intelligent Well Data
    TH 1671US 09/                     Tracer Injection in a Production
    Well
    TH 1672US 09/                     Oil Well Casing Electrical
    Power Pick-Off Points
    TH 1674US 09/                     Use of Downhole High Pressure
    Gas in a Gas-Lift Well
    TH 1675US 09/                     Wireless Smart Well Casing
    TH 1677US 09/                     Method for Downhole Power
    Management Using Energization
    from Distributed Batteries or
    Capacitors with Reconfigurable
    Discharge
    TH 1679US 09/                     Wireless Downhole Well
    Interval Inflow and
    Injection Control
    TH 1681US 09/                     Focused Through-Casing
    Resistivity Measurement
    TH 1704US 09/                     Downhole Rotary Hydraulic
    Pressure for Valve
    Actuation
    TH 1705US 09/                     Wireless Downhole Measure-
    ment and Control For
    Optimizing Gas Lift Well
    and Field Performance
    TN 1722US 09/                     Controlled Downhole Chemical
    Injection
    TH 1723US 09/                     Wireless Power and
    Communications Cross-Bar
    Switch
  • The current application shares some specification and figures with the following commonly owned and previously filed applications, all of which are hereby incorporated by reference: [0003]
    COMMONLY OWNED AND PREVIOUSLY FILED U.S PATENT
    APPLICATIONS
    Filing
    T&K # Ser. No. Title Date
    TH 1599US 09/                     Choke Inductor for Wireless
    Communication and Control
    TH 1600US 09/                     Induction Choke for Power
    Distribution in Piping Structure
    TH 1602US 09/                     Controllable Gas-Lift Well and
    Valve
    TH 1603US 09/                     Permanent Downhole, Wireless,
    Two-Way Telemetry Backbone
    Using Redundant Repeater
    TH 1668US 09/                     Petroleum Well Having Down-
    hole Sensors, Communication,
    and Power
    TH 1669US 09/                     System and Method for Fluid
    Flow Optimization
    TH 1783US 09/                     Downhole Motorized Flow
    Control Valve
    TS 6185US 09/                     A Method and Apparatus for
    the Optimal Predistortion
    of an Electro Magnetic
    Signal in a Downhole
    Communications System
  • The benefit of 35 U.S.C. § 120 is claimed for all of the above referenced commonly owned applications. The applications referenced in the tables above are referred to herein as the “Related Applications.”[0004]
  • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention [0005]
  • The present invention relates to a controllable production well packer. In one aspect, it relates to a petroleum production well packer comprising an electrically powered device, in which the device may comprise an electrically controllable valve, a communications and control module, a sensor, a modem, a tracer injection module, or any combination thereof. [0006]
  • 2. Description of the Related Art [0007]
  • Petroleum wells (e.g., oil and/or gas wells) typically pass through formations containing multiple zones that may produce differing fluids, as well as impermeable zones. The fluid-bearing zones may produce saline or clear water, oil, gas, or a mixture of these components. [0008]
  • It is desirable and customary to maintain hydraulic isolation between zones so that the fluids produced from each zone may be received separately at the surface. Even if a particular zone is not producing petroleum products, it is usually necessary to ensure that fluids from that zone do not travel to other zones using the wellbore as a transport path, and to avoid contamination of the fluids in each zone. [0009]
  • The necessary isolation between zones is often provided by packers. A typical hydraulically set production packer of the prior art is schematically shown in FIG. 1. Packers are mechanical devices that close the annulus between the production tubing and the casing, and seal to both. Packers are typically installed at the time of well. completion by attaching them to a tubing string as it is lowered into the well. Thus, during placement, the packer must pass freely within the casing. Once it is in place, a hydraulic actuator (energized and controlled from the surface) operates the sealing mechanism of the packer, which clamps the packer to the casing and effects a fluid-tight seal in the annular space between the tubing and the casing. [0010]
  • Packers may provide complete isolation between the annular spaces above and below them, or may be equipped with one or more preset mechanically-actuated valves to control flow past them. When control valves are included, however, their settings can only be altered by mechanically inserting a slick-line tool, which is inconvenient, slow, and relatively costly. Additionally, when there are multiple zones and multiple packers it is often impossible or impractical to reach the lowermost packers with a slick-line tool. This lack of a fast and inexpensive method for controlling valves in a packer is a constraint on well design and production operations. [0011]
  • Conventional packers are known such as described in U.S. Pat. Nos. 6,148,915, 6,123,148, 3,566,963 and 3,602,305. [0012]
  • All references cited herein are incorporated by reference to the maximum extent allowable by law. To the extent a reference may not be fully incorporated herein, it is incorporated by reference for background purposes, and indicative of the knowledge of one of ordinary skill in the art. [0013]
  • BRIEF SUMMARY OF THE INVENTION
  • The problems and needs outlined above are largely solved and met by the present invention. In accordance with one aspect of the present invention, a packer adapted for use in a petroleum well, wherein the packer comprises an electrically powered device, is provided. The electrically powered device may comprise an electrically controllable valve adapted to control fluid communication from one side of the packer to another side of the packer when the packer is operably installed. The electrically powered device may further comprise a communications and control module being electrically connected to the electrically controllable valve, wherein the module comprises a modem adapted to receive control commands encoded within communication signals. The module can be adapted to decode the control commands received by the modem and control the movement of the valve using the control commands when the packer is operably installed. Alternatively, the electrically powered device may comprise a sensor adapted to detect at least one physical characteristic of a surrounding environment and generate data corresponding to the physical characteristic, as well as a modem adapted to receive the data from the sensor and electrically transmit the data in the form of an electrical communication signal. Hence, the electrically powered device can comprise an electrically controllable valve, a sensor, a modem, a communications and control module, a tracer injection module, or any combination thereof. [0014]
  • In accordance with another aspect of the present invention, a petroleum production well incorporating the packer described above is provided. The petroleum well comprises a piping structure, a source of time-varying current, an electrical return, an induction choke, and the packer. The piping structure of the well comprises an electrically conductive portion extending along at least part of the piping structure. The piping structure can comprise a production tubing string of the well. The source of time-varying current comprises two source terminals. A first of the source terminals is electrically connected to the electrically conductive portion of the piping structure. The electrical return electrically connects between the electrically conductive portion of the piping structure and a second of the source terminals of the time-varying current source. The electrical return can comprise a well casing of the well, part of the packer, another packer, and/or a conductive fluid within the well. The induction choke is located about part of the electrically conductive portion of the piping structure at a location along the piping structure between the electrical connection location for the first source terminal and the electrical connection location for the electrical return, such that a voltage potential is formed between the electrically conductive portion of the piping structure on a source-side of the induction choke, and the electrically conductive portion of the piping structure on an electrical-return-side of the induction choke as well as the electrical return when time-varying current flows through the electrically conductive portion of the piping structure. The induction choke can comprise a ferromagnetic material. Also, the induction choke need not be powered when its size, geometry, and magnetic properties can provide sufficient magnetic inductance for developing the voltage potential desired. The electrically powered device of the packer is electrically connected across the voltage potential such that part of the time-varying current is routed through the device due to the induction choke when the time-varying current flows through the electrically conductive portion of the piping structure. [0015]
  • In accordance with yet another aspect of the present invention, a method of producing petroleum products from a petroleum well comprising an electrically powered packer is provided. [0016]
  • A conventional petroleum well includes a cased wellbore having a tubing string positioned within and longitudinally extending within the casing. In a preferred embodiment, a controllable packer is coupled to the tubing to provide a seal of the annular space between the tubing and casing. A valve in the packer (and/or other devices, such as sensors) is powered and controlled from the surface. Communication signals and power are sent from the surface using the tubing and casing as conductors. At least one induction choke is coupled about the tubing downhole to magnetically inhibit alternating current flow through the tubing at a choke. An insulating tubing joint, another induction choke, or another insulating means between the tubing and casing can be located at the surface above a location where current and communication signals are imparted to the tubing. Hence, most of the alternating current is contained between the downhole choke and the insulating tubing joint, or between the chokes when two chokes are used. [0017]
  • The Related Applications describe alternative ways to provide electrical power from the surface to downhole modules, and to establish bidirectional communications for data and commands to be passed between the surface and downhole modules using surface and downhole modems. A preferred embodiment utilizes the production tubing and the well casing as the electrical conduction path between the surface and downhole equipment. The cost reduction and simplification of installation procedures which accrue from obviating the need for electrical cables to provide power, sensing, and control functions downhole allow wider deployment of active equipment downhole during production. [0018]
  • In the context of downhole packers, the ability to power and communicate with the packer has many advantages. Such a controllable packer in accordance with the present invention may incorporate sensors, with data from the sensors being received in real time at the surface. Similarly, the availability of power downhole, and the ability to pass commands from the surface to the controllable packer, allow electrically motorized mechanical components, such as flow control valves, to be included in packer design, thus increasing their flexibility in use. Notably, the control of such components in the controllable packer hereof is near real time, allowing packer flow control valves to be opened, closed, adjusted, or throttled constantly to contribute to the management of production. [0019]
  • In a preferred embodiment, a surface computer having a master modem can impart a communication signal to the tubing, and the communication signal is received at a slave modem downhole, which is electrically connected to or within the controllable packer. The communication signal can be received by the slave modem either directly or indirectly via one or more relay modems. Further, electric power can be input into the tubing string and received downhole to power the operation of sensors or other devices in the controllable packer. Preferably, the casing is used as a conductor for the electrical return. [0020]
  • In a preferred embodiment, a controllable valve in the packer regulates the fluid communication in the annulus between the casing and tubing. The electrical return path can be provided along part of the controllable packer, and preferably by the expansion of the expansion slips into contact with the casing. Alternatively, the electrical return path may be via a conductive centralizer around the tubing which is insulated in its contact with the tubing, but is in electrical contact with the casing and electrically connected to the device in the packer. [0021]
  • In enhanced forms, the controllable packer includes one or more sensors downhole which are preferably in contact with the downhole modem and communicate with the surface computer via the tubing and/or well casing. Such sensors as temperature, pressure, acoustic, valve position, flow rates, and differential pressure gauges can be advantageously used in many situations. The sensors supply measurements to the modem for transmission to the surface or directly to a programmable interface controller operating a downhole device, such as controllable valve for controlling the fluid flow through the packer. [0022]
  • In one embodiment, ferromagnetic induction chokes are coupled about the tubing to act as a series impedance to current flow on the tubing. In a preferred form, an upper ferromagnetic choke. is placed around the tubing below the casing hanger, and the current and communication signals are imparted to the tubing below the upper ferromagnetic choke. A lower ferromagnetic choke is placed downhole around the tubing with the controllable packer electrically coupled to the tubing above the lower ferromagnetic choke, although the controllable packer may be mechanically coupled to the tubing below the lower ferromagnetic choke instead. [0023]
  • Preferably, a surface computer is coupled via a surface master modem and the tubing to the downhole slave modem of the controllable packer. The surface computer can receive measurements from a variety of sources (e.g., downhole sensors), measurements of the oil output from the well, and measurements of the compressed gas input to the well in the case of a gas lift well. Using such measurements, the computer can compute desired positions of the controllable valve in the packer, and more particularly, the optimum amount of fluid communication to permit into the annulus inside the casing. [0024]
  • Construction of such a petroleum well is designed to be as similar to conventional construction methodology as possible. That is, after casing the well, a packer is typically set to isolate each zone. In a production well, there may be several oil producing zones, water producing zones, impermeable zones, and thief zones. It is desirable to prevent or permit communication between the zones. For example when implementing the present invention, the tubing string is fed through the casing into communication with the production zone, with controllable packers defining the production zone. As the tubing string is made up at the surface, a lower ferromagnetic choke is placed around one of the conventional tubing strings for positioning above the lowermost controllable packer. In the sections of the tubing strings where it is desired, another packer is coupled to the tubing string to isolate zones. Controllable gas lift valves or sensor pods also may be coupled to the tubing as desired by insertion in a side pocket mandrel (tubing conveyed) and corresponding induction chokes as needed. The tubing string is made up to the surface where an upper ferromagnetic induction choke is again placed around the tubing string below the casing hanger. Communication and power leads are then connected to the tubing string below the upper choke. In an enhanced form, an electrically insulating joint is used instead of the upper induction choke. [0025]
  • A sensor and communication pod can be incorporated into the controllable packer of the present invention without the necessity of including a controllable valve or other control device. That is, an electronics module having pressure, temperature or acoustic sensors, power supply, and a modem can be incorporated into the packer for communication to the surface computer using the tubing and casing as conductors.[0026]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • Other objects and advantages of the invention will become apparent upon reading the following detailed description and upon referencing the accompanying drawings, in which: [0027]
  • FIG. 1 is a schematic showing a typical packer of the prior art; [0028]
  • FIG. 2 is a schematic showing a petroleum production well in accordance with a preferred embodiment of the present invention; [0029]
  • FIG. 3 is a simplified electrical schematic of the embodiment shown in FIG. 2; and [0030]
  • FIG. 4 is an enlarged schematic showing a controllable packer, from FIG. 2, comprising an electrically controllable valve.[0031]
  • DETAILED DESCRIPTION OF THE INVENTION
  • Referring now to the drawings, wherein like reference numbers are used herein to designate like elements throughout the various views, a preferred embodiment of the present invention is illustrated and further described, and other possible embodiments of the present invention are described. The figures are not necessarily drawn to scale, and in some instances the drawings have been exaggerated and/or simplified in places for illustrative purposes only. One of ordinary skill in the art will appreciate the many possible applications and variations of the present invention based on the following examples of possible embodiments of the present invention, as well as based on those embodiments illustrated and discussed in the Related Applications, which are incorporated by reference herein to the maximum extent allowed by law. [0032]
  • As used in the present application, a “piping structure” can be one single pipe, a tubing string, a well casing, a pumping rod, a series of interconnected pipes, rods, rails, trusses, lattices, supports, a branch or lateral extension of a well, a network of interconnected pipes, or other similar structures known to one of ordinary skill in the art. The preferred embodiment makes use of the invention in the context of a petroleum well where the piping structure comprises tubular, metallic, electrically-conductive pipe or tubing strings, but the invention is not so limited. For the present invention, at least a portion of the piping structure needs to be electrically conductive, such electrically conductive portion may be the entire piping structure (e.g., steel pipes, copper pipes) or a longitudinal extending electrically conductive portion combined with a longitudinally extending non-conductive portion. In other words, an electrically conductive piping structure is one that provides an electrical conducting path from a first portion where a power source is electrically connected to a second portion where a device and/or electrical return is electrically connected. The piping structure will typically be conventional round metal tubing, but the cross-section geometry of the piping structure, or any portion thereof, can vary in shape (e.g., round, rectangular, square, oval) and size (e.g., length, diameter, wall thickness) along any portion of the piping structure. Hence, a piping structure must have an electrically conductive portion extending from a first portion of the piping structure to a second portion of the piping structure, wherein the first portion is distally spaced from the second portion along the piping structure. [0033]
  • Note that the terms “first portion” and “second portion” as used herein are each defined generally to call out a portion, section, or region of a piping structure that may or may not extend along the piping structure, that can be located at any chosen place along the piping structure, and that may or may not encompass the most proximate ends of the piping structure. [0034]
  • Similarly, in accordance with conventional terminology of oilfield practice, the descriptors “upper”, “lower”, “uphole” and “downhole” are relative and refer to distance along hole depth from the surface, which in deviated or horizontal wells may or may not accord with vertical elevation measured with respect to a survey datum. [0035]
  • Also note that the term “modem” is used herein to generically refer to any communications device for transmitting and/or receiving electrical communication signals via an electrical conductor (e.g., metal). Hence, the term “modem” as used herein is not limited to the acronym for a modulator (device that converts a voice or data signal into a form that can be transmitted)/demodulator (a device that recovers an original signal after it has modulated a high frequency carrier). Also, the term “modem” as used herein is not limited to conventional computer modems that convert digital signals to analog signals and vice versa (e.g., to send digital data signals over the analog Public Switched Telephone Network). For example, if a sensor outputs measurements in an analog format, then such measurements may only need to be modulated (e.g., spread spectrum modulation) and transmitted—hence no analog/digital conversion needed. As another example, a relay/slave modem or communication device may only need to identify, filter, amplify, and/or retransmit a signal received. [0036]
  • As used in the present application, “wireless” means the absence of a conventional, insulated wire conductor e.g. extending from a downhole device to the surface. Using the tubing and/or casing as a conductor is considered “wireless.” The term “valve” as used herein generally refers to any device that functions to regulate the flow of a fluid. Examples of valves include, but are not limited to, bellows-type gas-lift valves and controllable gas-lift valves, each of which may be used to regulate the flow of lift gas into a tubing string of a well. The internal workings of valves can vary greatly, and in the present application, it is not intended to limit the valves described to any particular configuration, so long as the valve functions to regulate flow. Some of the various types of flow regulating mechanisms include, but are not limited to, ball valve configurations, needle valve configurations, gate valve configurations, and cage valve configurations. The methods of installation for valves discussed in the present application can vary widely. [0037]
  • The term “electrically controllable valve” as used herein generally refers to a “valve” (as just described) that can be opened, closed, adjusted, altered, or throttled continuously in response to an electrical control signal (e.g., signal from a surface computer or from a downhole electronic controller module). The mechanism that actually moves the valve position can comprise, but is not limited to: an electric motor; an electric servo; an electric solenoid; an electric switch; a hydraulic actuator controlled by at least one electrical servo, electrical motor, electrical switch, electric solenoid, or combinations thereof; a pneumatic actuator controlled by at least one electrical servo, electrical motor, electrical switch, electric solenoid, or combinations thereof; or a spring biased device in combination with at least one electrical servo, electrical motor, electrical switch, electric solenoid, or combinations thereof. An “electrically controllable valve” may or may not include a position feedback sensor for providing a feedback signal corresponding to the actual position of the valve. [0038]
  • The term “sensor” as used herein refers to any device that detects, determines, monitors, records, or otherwise senses the absolute value of or a change in a physical quantity. A sensor as described herein can be used to measure physical quantities including, but not limited to: temperature, pressure (both absolute and differential), flow rate, seismic data, acoustic data, pH level, salinity levels, valve positions, or almost any other physical data. [0039]
  • FIG. 1 is a schematic showing a conventional hydraulically set [0040] production packer 20 of the prior art set within a well casing 22 of a well. The packer 20 of FIG. 1 is threaded to a production tubing string 24. The conventional packer 20 has a tail piece 26 that may terminate with an open or closed end for the lowest packer in the completed well, or the tail piece 26 may be threaded onto tubing (not shown) that passes to lower regions of the well. The conventional packer 20 has a section of slips 28 and a seal section 30. Both the slips 28 and the seal section 30 can pass freely inside the well casing 22 during placement, and are operated by a hydraulic actuator 32. When the packer 20 is at its final location in the casing 22, the hydraulic actuator 32 is used to exert mechanical forces on the slips 28 and the seals 30 causing them to expand against the casing. The slips 28 lock the packer 20 in place by gripping the internal surface of the casing 22 so that the packer cannot be displaced by differential pressure between the spaces above and below the packer. The seal section 30 creates a liquid-tight seal between the spaces above and below the packer 20. The hydraulic actuator 32 is operated using high-pressure oil supplied from the surface (not shown) by a control tube 34. However, the conventional packer 20 does not comprise an electrically powered device.
  • FIG. 2 is a schematic showing a petroleum production well [0041] 38 in accordance with a preferred embodiment of the present invention. The petroleum production well 38 shown in FIG. 2 is similar to a conventional well in construction, but with the incorporation of the present invention. In this example, a packer 40 comprising an electrically powered device 42 is placed in the well 38 in the same manner as a conventional packer 20 would be—to separate zones in a formation. In the preferred embodiment, the electrically powered device 42 of the packer 40 comprises an electrically controllable valve 44 that acts as a bypass valve, as shown in more detail in FIG. 4 and described further below.
  • In a preferred embodiment, the piping structure comprises part of a [0042] production tubing string 24, and the electrical return comprises part of a well casing 22. An insulating tubing joint 146 and a ferromagnetic induction choke 48 are used in this preferred embodiment. The insulating joint 146 is incorporated close to the wellhead to electrically insulate the lower sections of tubing 24 from casing 22. Thus, the insulating joint 146 prevents an electrical short-circuit between the lower sections of tubing 24 and casing 22 at the tubing hanger 46. The hanger 46 provides mechanical coupling and support of the tubing 24 by transferring the weight load of the tubing 24 to the casing 22. The induction choke 48 is attached about the tubing string 24 at a second portion 52 downhole above the packer 40. A computer system 56 comprising a master modem 58 and a source of time-varying current 60 is electrically connected to the tubing string 24 below the insulating tubing joint 146 by a first source terminal 61. The first source terminal 61 is insulated from the hanger 46 where it passes through it. A second source terminal 62 is electrically connected to the well casing 22, either directly (as in FIG. 2) or via the hanger 46 (arrangement not shown). In alternative to or in addition to the insulating tubing joint 146, another induction choke (not shown) can be placed about the tubing 24 above the electrical connection location for the first source terminal 61 to the tubing.
  • The time-varying [0043] current source 60 provides the current, which carries power and communication signals downhole. The time-varying current is preferably alternating current (AC), but it can also be a varying direct current (DC). The communication signals can be generated by the master modem 58 and embedded within the current produced by the source 60. Preferably, the communication signal is a spread spectrum signal, but other forms of modulation could be used in alternative.
  • The electrically [0044] powered device 42 in the packer 40 comprises two device terminals 71, 72, and there can be other device terminals as needed for other embodiments or applications. A first device terminal 71 is electrically connected to the tubing 24 on a source-side 81 of the induction choke 48, which in this case is above the induction choke. Similarly, a second device terminal 72 is electrically connected to the tubing 24 on an electrical-return-side, 82 of the induction choke 48, which in this case is below the induction choke. In this preferred embodiment, the slips 28 of the packer 40 provide the electrical connection between the tubing 24 and the well casing 22. However, as will be clear to one of ordinary skill in the art, the electrical connection between the tubing 24 and the well casing 22 can be accomplished in numerous ways, some of which can be seen in the Related Applications, including (but not limited to): another packer (conventional or controllable); conductive fluid in the annulus between the tubing and the well casing; a conductive centralizer; or any combination thereof. Hence, an electrical circuit is formed using the tubing 24 and the well casing 22 as conductors to the downhole device 42 within the packer 40.
  • FIG. 3 illustrates a simplified electrical schematic of the electrical circuit formed in the well [0045] 38 of FIG. 2. The insulating tubing joint 146 and the induction choke 48 effectively create an isolated section of the tubing string 24 to contain most of the time-varying current between them. Accordingly, a voltage potential develops between the isolated section of tubing 24 and the well casing 22 when AC flows through the tubing string. Likewise, the voltage potential also forms between tubing 24 on the source-side 81 of the induction choke 48 and the tubing 24 on the electrical-return-side 82 of the induction choke 48 when AC flows through the tubing string. In the preferred embodiment, the electrically powered device 42 in the packer 40 is electrically connected across the voltage potential between the source-side 81 and the electrical-return-side 82 of the tubing 24. However in alternative, the device 42 can be electrically connected across the voltage potential between the tubing 24 and the casing 22, or the voltage potential between the tubing 24 and part of the packer 40 (e.g., slips 28), if that part of the packer is electrically contacting the well casing 22. Thus, part of the current that travels through the tubing 24 and casing 22 is routed through the device 42 due to the induction choke 48.
  • As is made clear by consideration of the electrical equivalent circuit diagram of FIG. 3, centralizers which are installed on the tubing between [0046] isolation device 47 and choke 48 must not provide an electrically conductive path between tubing 24 and casing 22. Suitable centralizers may be composed of solid molded or machined plastic, or may be of the bow-spring type provided these are furnished with appropriate insulating elements. Many suitable and alternative design implementations of such centralizers will be clear to those of average skill in the art.
  • Other alternative ways to develop an electrical circuit using a piping structure and at least one induction choke are described in the Related Applications, many of which can be applied in conjunction with the present invention to provide power and/or communications to the electrically [0047] powered device 42 of the packer 40 and to form other embodiments of the present invention.
  • Turning to FIG. 4, which shows more details of the [0048] packer 40 of FIG. 2, it is seen that the controllable packer 40 is similar to the conventional packer 20 (shown in FIG. 1), but with the addition of an electrically powered device 42 comprising an electrically controllable valve 44 and a communications and control module 84. The communications and control module 84 is powered from and communicates with the computer system 56 at the surface 54 via the tubing 24 and/or the casing 22. The communications and control module 84 may comprise a modem 86, a power transformer (not shown), a microprocessor (not shown), and/or other various electronic components (not shown) as needed for an embodiment. The communications and control module 84 receives electrical signals from the computer system 56 at the surface 54 and decodes commands for controlling the electrically controlled valve 44, which acts as a bypass valve. Using the decoded commands, the communications and control module 84 controls a low current electric motor that actuates the movement of the bypass valve 44. Thus, the valve 44 can be opened, closed, adjusted, altered, or throttled continuously by the computer system 56 from the surface 54 via the tubing 24 and well casing 22.
  • The [0049] bypass valve 44 of FIG. 4 controls flow through a bypass tube 88, which connects inlet and outlet ports 90, 92 at the bottom and top of the packer 40. The ports 90, 92 communicate freely with the annular spaces 94, 96 (between the casing 22 and the tubing 24), above and below the packer 40. The bypass control valve 44 therefore controls fluid exchange between these spaces 94, 96, and this exchange may be altered in real time using commands sent from the computer system 56 and received by the controllable packer 40.
  • The mechanical arrangement of the [0050] packer 40 depicted in FIG. 4 is illustrative, and alternative embodiments having other mechanical features providing the same functional needs of a packer (i.e., fluidly isolating and sealing one casing section from another casing section in a well, and in the case of a controllable packer, regulating and controlling fluid flow between these isolated casing sections) are possible and encompassed within the present invention. For instance, the inlet and outlet ports 90, 92 may be exchanged to pass fluids from the annular space 94 above the packer 40 to the space 96 below the packer. Also, the communications and control module 84 and the bypass control valve 44 may be located in upper portion of the packer 40, above the slips 28. The controllable packer 40 may also comprise sensors (not shown) electrically connected to or within the communication and control module 84, to measure pressures or temperatures in the annuli 94, 96 or within the production tubing 24. Hence, the measurements can be transmitted to the computer system 56 at the surface 54 using the communications and control module 84, providing real time data on downhole conditions. Also the setting and unsetting mechanism of the packer slips may be actuated by one or more motors driven and controlled by power and commands received by module 84.
  • In other possible embodiments of the present invention, the electrically [0051] powered device 42 of the packer 40 may comprise: a modem 86; a sensor (not shown); a microprocessor (not shown); a packer valve 44; a tracer injection module (not shown); an electrically controllable gas-lift valve (e.g., for controlling the flow of gas from the annulus to inside the tubing) (not shown); a tubing valve (e.g., for varying the flow of a tubing section, such as an application having multiple branches or laterals) (not shown); a communications and control module 84; a logic circuit (not shown); a relay modem (not shown); other electronic components as needed (not shown); or any combination thereof.
  • Also in other possible embodiments of the present invention, there may be multiple controllable packers and/or multiple induction chokes. In an application where there are multiple controllable packers or additional conventional packers combined with the present invention, it may be necessary to electrically insulate some or all of the packers so that a packer does not act as a short between the piping structure (e.g., tubing [0052] 24) and the electrical return (e.g., casing 22) where such a short is not desired. Such electrical insulation of a packer may be achieved in various ways apparent to one of ordinary skill in the art, including (but not limited to): an insulating sleeve about the tubing at the packer location; a rubber or urethane portion at the radial extent of the packer slips; an insulating coating on the tubing at the packer location; forming the slips from non-electrically-conductive materials; other known insulating means; or any combination thereof. The present invention also can be applied to other types of wells (other than petroleum wells), such as a water well.
  • It will be appreciated by those skilled in the art having the benefit of this disclosure that this invention provides a packer comprising an electrically powered device, as well as a petroleum production well incorporating such a packer. It should be understood that the drawings and detailed description herein are to be regarded in an illustrative rather than a restrictive manner, and are not intended to limit the invention to the particular forms and examples disclosed. On the contrary, the invention includes any further modifications, changes, rearrangements, substitutions, alternatives, design choices, and embodiments apparent to those of ordinary skill in the art, without departing from the spirit and scope of this invention, as defined by the following claims. Thus, it is intended that the following claims be interpreted to embrace all such further modifications, changes, rearrangements, substitutions, alternatives, design choices, and embodiments. [0053]

Claims (24)

The invention claimed is:
1. A packer adapted for use in a well, said packer including an electrically powered device adapted for receiving AC power from the surface using at least one of the tubing or casing as a conductor.
2. A packer in accordance with claim 1, wherein said electrically powered device comprises an electrically controllable valve adapted to control fluid communication from one side of said packer to another side of said packer.
3. A packer in accordance with claim 2, wherein said electrically powered device further comprises a communications and control module being electrically connected to said electrically controllable valve, said module comprising a modem adapted to receive control commands encoded within communication signals, and said module being adapted to decode said control commands received by said modem and control the movement of said valve using said control commands when said packer is operably installed.
4. A packer in accordance with claim 1, wherein said electrically powered device comprises:
a sensor adapted to detect at least one physical characteristic of a surrounding environment and generate data corresponding to said physical characteristic; and
a modem adapted to receive said data from said sensor and electrically transmit said data in the form of an electrical communication signal.
5. A petroleum well for producing petroleum products, comprising:
a piping structure comprising an electrically conductive portion extending along at least part of said piping structure;
a source of time-varying current electrically connected to said electrically conductive portion of said piping structure;
an electrical return; and
a packer including an electrically powered device, said electrically powered device being electrically connected potential such that part of said time-varying current is routed through said device when said time-varying current is applied through said electrically conductive portion of said piping structure.
6. A petroleum well in accordance with claim 5, wherein said electrically powered device comprises an electrically controllable valve adapted to control fluid communication between one side of said packer and another side of said packer when said packer is operably installed.
7. A petroleum well in accordance with claim 5, wherein said electrically powered device comprises a sensor adapted to measure a physical quantity.
8. A petroleum well in accordance with claim 5, wherein said electrically powered device comprises a modem adapted to send and receive communications along said electrically conductive portion of piping structure.
9. A petroleum well in accordance with claim 5, wherein said electrically powered device comprises a chemical injection module adapted to controllably inject a substance into a flow stream.
10. A petroleum well in accordance with claim 5, wherein said electrically powered device comprises an electrically controllable valve adapted to control fluid communication between an exterior and an interior of a production tubing string.
11. A petroleum well in accordance with claim 5, wherein said electrically powered device comprises an electrically controllable valve adapted to control fluid flow within a production tube.
12. A petroleum well in accordance with claim 5, wherein said piping structure comprises a production tubing string of said well.
13. A petroleum well in accordance with claim 5, wherein said piping structure comprises a well casing of said well.
14. A petroleum well in accordance with claim 5, wherein said electrical return comprises a well casing of said well.
15. A petroleum well in accordance with claim 5, wherein said electrical return comprises at least a portion of an earthen ground.
16. A petroleum well in accordance with claim 5, further comprising a second induction choke, said second induction choke being located about another part of said electrically conductive portion of said piping structure and at a location along said piping structure such that said electrical connection location for said time-varying current source is located between said induction chokes.
17. A petroleum well in accordance with claim 5, further comprising a second packer.
18. A petroleum well in accordance with claim 17, wherein said second packer comprises an electrical insulator so that said electrically conductive portion of said piping structure is not electrically connected to said electrical return at said second packer when said second packer is operably installed.
19. A petroleum well in accordance with claim 17, wherein said second packer is part of said electrical return.
20. A petroleum well in accordance with claim 5, wherein said packer is located on said source-side of said induction choke.
21. A petroleum well in accordance with claim 5, wherein said packer is located on said electrical-return-side of said induction choke.
22. A method of operating a petroleum well comprising: providing an electrically powered packer in a petroleum well;
providing a piping structure in said well, said piping structure comprising an electrically conductive portion extending along at least part of said piping structure;
operably installing said electrically powered packer in said well, said electrically powered packer comprising an electrically powered device, such that said device is electrically connected to said electrically conductive portion of said piping structure when said well is operable for petroleum production;
operably installing an induction choke about part of said electrically conductive portion of said piping structure;
supplying time-varying current to said piping structure;
routing part of said time-varying current through said electrically powered device using said induction choke; and
producing petroleum products with said well.
23. A method in accordance with claim 22, further comprising the steps of:
measuring a physical quantity with said electrically powered device, wherein said electrically powered device comprises a sensor; and
varying a flow of petroleum products in said well based on said measurements.
24. A method in accordance with claim 22, further comprising the step of:
electrically controlling fluid communication between sections of said well using said packer, wherein said electrically powered device comprises an electrically controllable valve.
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060016593A1 (en) * 2004-07-22 2006-01-26 Schlumberger Technology Corporation Downhole Measurement System and Method
WO2008127390A2 (en) * 2006-11-01 2008-10-23 The Regents Of The University Of California Piezotube borehole seismic source
US20090266533A1 (en) * 2006-10-24 2009-10-29 Matheus Norbertus Baajiens System for determining sealing in a wellbore
US20150053415A1 (en) * 2013-08-22 2015-02-26 Schlumberger Technology Corporation Wellbore annular safety valve and method
US9605524B2 (en) 2012-01-23 2017-03-28 Genie Ip B.V. Heater pattern for in situ thermal processing of a subsurface hydrocarbon containing formation
US20170275991A1 (en) * 2016-03-24 2017-09-28 Expro North Sea Limited Monitoring systems and methods
WO2018122547A1 (en) * 2016-12-30 2018-07-05 Metrol Technology Ltd Downhole energy harvesting
WO2018122545A1 (en) * 2016-12-30 2018-07-05 Metrol Technology Ltd Downhole energy harvesting
US10047594B2 (en) 2012-01-23 2018-08-14 Genie Ip B.V. Heater pattern for in situ thermal processing of a subsurface hydrocarbon containing formation
GB2572499A (en) * 2015-06-09 2019-10-02 Wellguard As Apparatus for monitoring at least a portion of a wellbore
WO2019212499A1 (en) * 2018-04-30 2019-11-07 Halliburton Energy Services, Inc. Packer setting and real-time verification method
CN112647857A (en) * 2019-10-12 2021-04-13 中国石油化工股份有限公司 Injection-production string and well completion method using same
US11072999B2 (en) 2016-12-30 2021-07-27 Metrol Technology Ltd. Downhole energy harvesting
US11085272B2 (en) * 2017-03-31 2021-08-10 Metrol Technology Ltd. Powering downhole devices
US11199075B2 (en) 2016-12-30 2021-12-14 Metrol Technology Ltd. Downhole energy harvesting
GB2605806A (en) * 2021-04-13 2022-10-19 Metrol Tech Ltd Casing packer

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0425008D0 (en) 2004-11-12 2004-12-15 Petrowell Ltd Method and apparatus
US10262168B2 (en) 2007-05-09 2019-04-16 Weatherford Technology Holdings, Llc Antenna for use in a downhole tubular
US7828059B2 (en) * 2007-08-14 2010-11-09 Baker Hughes Incorporated Dual zone flow choke for downhole motors
GB0720421D0 (en) 2007-10-19 2007-11-28 Petrowell Ltd Method and apparatus for completing a well
GB0804306D0 (en) 2008-03-07 2008-04-16 Petrowell Ltd Device
US8540035B2 (en) 2008-05-05 2013-09-24 Weatherford/Lamb, Inc. Extendable cutting tools for use in a wellbore
CA2722608C (en) 2008-05-05 2015-06-30 Weatherford/Lamb, Inc. Tools and methods for hanging and/or expanding liner strings
GB0822144D0 (en) 2008-12-04 2009-01-14 Petrowell Ltd Flow control device
GB0914650D0 (en) 2009-08-21 2009-09-30 Petrowell Ltd Apparatus and method
US8251140B2 (en) * 2009-09-15 2012-08-28 Schlumberger Technology Corporation Fluid monitoring and flow characterization
US8955606B2 (en) 2011-06-03 2015-02-17 Baker Hughes Incorporated Sealing devices for sealing inner wall surfaces of a wellbore and methods of installing same in a wellbore
US8905149B2 (en) 2011-06-08 2014-12-09 Baker Hughes Incorporated Expandable seal with conforming ribs
WO2013043477A2 (en) 2011-09-20 2013-03-28 Saudi Arabian Oil Company Through tubing pumping system with automatically deployable and retractable seal
EP2597491A1 (en) * 2011-11-24 2013-05-29 Services Pétroliers Schlumberger Surface communication system for communication with downhole wireless modem prior to deployment
US8839874B2 (en) 2012-05-15 2014-09-23 Baker Hughes Incorporated Packing element backup system
CA2871741C (en) 2012-06-04 2018-02-13 Exxonmobil Upstream Research Company Wellbore assembly for injecting a fluid into a subsurface formation, and method of injecting fluids into a subsurface formation
US9581705B2 (en) * 2012-10-15 2017-02-28 Stephen Chelminski System and method for producing high quality seismic records within bore holes
WO2014074093A1 (en) * 2012-11-07 2014-05-15 Halliburton Energy Services, Inc. Time delay well flow control
US9243490B2 (en) 2012-12-19 2016-01-26 Baker Hughes Incorporated Electronically set and retrievable isolation devices for wellbores and methods thereof
US9273526B2 (en) 2013-01-16 2016-03-01 Baker Hughes Incorporated Downhole anchoring systems and methods of using same
CN106285588A (en) * 2015-06-11 2017-01-04 中国石油天然气股份有限公司 A kind of preset cable direct controlled type automatically controlled layered polymer injection process pipe string and note poly-method
US10273801B2 (en) 2017-05-23 2019-04-30 General Electric Company Methods and systems for downhole sensing and communications in gas lift wells
US11326440B2 (en) 2019-09-18 2022-05-10 Exxonmobil Upstream Research Company Instrumented couplings
CN110847821B (en) * 2019-10-25 2020-12-11 西安石大斯泰瑞油田技术有限公司 High-deflecting and high-drilling-speed rotary guide system

Citations (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US525663A (en) * 1894-09-04 Sash-fastener
US2083321A (en) * 1935-06-24 1937-06-08 Ici Ltd Calcium sulphate plaster
US2379800A (en) * 1941-09-11 1945-07-03 Texas Co Signal transmission system
US2414719A (en) * 1942-04-25 1947-01-21 Stanolind Oil & Gas Co Transmission system
US3083771A (en) * 1959-05-18 1963-04-02 Jersey Prod Res Co Single tubing string dual installation
US3087545A (en) * 1961-08-09 1963-04-30 Pure Oil Co Method of heating and producing oil wells
US3247904A (en) * 1963-04-01 1966-04-26 Richfield Oil Corp Dual completion tool
US3427989A (en) * 1966-12-01 1969-02-18 Otis Eng Corp Well tools
US3465273A (en) * 1967-12-14 1969-09-02 Hunterdon Transformer Co Toroidal inductor
US3566963A (en) * 1970-02-25 1971-03-02 Mid South Pump And Supply Co I Well packer
US3602305A (en) * 1969-12-31 1971-08-31 Schlumberger Technology Corp Retrievable well packer
US3659336A (en) * 1970-01-30 1972-05-02 Electronic Diversified Inc Method of manufacturing an inductive device
US3731728A (en) * 1971-09-27 1973-05-08 Gen Motors Corp Mold apparatus for continuous casting
US3793632A (en) * 1971-03-31 1974-02-19 W Still Telemetry system for drill bore holes
US3814545A (en) * 1973-01-19 1974-06-04 W Waters Hydrogas lift system
US3837618A (en) * 1973-04-26 1974-09-24 Co Des Freins Et Signaux Westi Electro-pneumatic valve
US3980826A (en) * 1973-09-12 1976-09-14 International Business Machines Corporation Means of predistorting digital signals
US4068717A (en) * 1976-01-05 1978-01-17 Phillips Petroleum Company Producing heavy oil from tar sands
US4087781A (en) * 1974-07-01 1978-05-02 Raytheon Company Electromagnetic lithosphere telemetry system
US4278758A (en) * 1979-07-06 1981-07-14 Drexler Technology Corporation Process for making a reflective data storage medium
US4350205A (en) * 1979-03-09 1982-09-21 Schlumberger Technology Corporation Work over methods and apparatus
US4393485A (en) * 1980-05-02 1983-07-12 Baker International Corporation Apparatus for compiling and monitoring subterranean well-test data
US4468665A (en) * 1981-01-30 1984-08-28 Tele-Drill, Inc. Downhole digital power amplifier for a measurements-while-drilling telemetry system
US4566534A (en) * 1985-02-01 1986-01-28 Camco, Incorporated Solenoid actuated well safety valve
US4576231A (en) * 1984-09-13 1986-03-18 Texaco Inc. Method and apparatus for combating encroachment by in situ treated formations
US4578675A (en) * 1982-09-30 1986-03-25 Macleod Laboratories, Inc. Apparatus and method for logging wells while drilling
US4596516A (en) * 1983-07-14 1986-06-24 Econolift System, Ltd. Gas lift apparatus having condition responsive gas inlet valve
US4648471A (en) * 1983-11-02 1987-03-10 Schlumberger Technology Corporation Control system for borehole tools
US4662437A (en) * 1985-11-14 1987-05-05 Atlantic Richfield Company Electrically stimulated well production system with flexible tubing conductor
US4681164A (en) * 1986-05-30 1987-07-21 Stacks Ronald R Method of treating wells with aqueous foam
US4738313A (en) * 1987-02-20 1988-04-19 Delta-X Corporation Gas lift optimization
US4739325A (en) * 1982-09-30 1988-04-19 Macleod Laboratories, Inc. Apparatus and method for down-hole EM telemetry while drilling
US4839644A (en) * 1987-06-10 1989-06-13 Schlumberger Technology Corp. System and method for communicating signals in a cased borehole having tubing
US4852648A (en) * 1987-12-04 1989-08-01 Ava International Corporation Well installation in which electrical current is supplied for a source at the wellhead to an electrically responsive device located a substantial distance below the wellhead
US4901069A (en) * 1987-07-16 1990-02-13 Schlumberger Technology Corporation Apparatus for electromagnetically coupling power and data signals between a first unit and a second unit and in particular between well bore apparatus and the surface
US4933640A (en) * 1988-12-30 1990-06-12 Vector Magnetics Apparatus for locating an elongated conductive body by electromagnetic measurement while drilling
US4981173A (en) * 1988-03-18 1991-01-01 Otis Engineering Corporation Electric surface controlled subsurface valve system
US5001675A (en) * 1989-09-13 1991-03-19 Teleco Oilfield Services Inc. Phase and amplitude calibration system for electromagnetic propagation based earth formation evaluation instruments
US5008664A (en) * 1990-01-23 1991-04-16 Quantum Solutions, Inc. Apparatus for inductively coupling signals between a downhole sensor and the surface
US5031697A (en) * 1989-03-14 1991-07-16 Shell Oil Company Method for troubleshooting gas-lift wells
US5034371A (en) * 1989-03-27 1991-07-23 Fuji Photo Film Co., Ltd. Thermal transfer image recording method and thermal transfer dye donating material
US5130706A (en) * 1991-04-22 1992-07-14 Scientific Drilling International Direct switching modulation for electromagnetic borehole telemetry
US5134285A (en) * 1991-01-15 1992-07-28 Teleco Oilfield Services Inc. Formation density logging mwd apparatus
US5176164A (en) * 1989-12-27 1993-01-05 Otis Engineering Corporation Flow control valve system
US5191326A (en) * 1991-09-05 1993-03-02 Schlumberger Technology Corporation Communications protocol for digital telemetry system
US5216285A (en) * 1992-02-24 1993-06-01 Gunderson, Inc. Freight car with electrical power distribution
US5230383A (en) * 1991-10-07 1993-07-27 Camco International Inc. Electrically actuated well annulus safety valve
US5236048A (en) * 1991-12-10 1993-08-17 Halliburton Company Apparatus and method for communicating electrical signals in a well, including electrical coupling for electric circuits therein
US5291947A (en) * 1992-06-08 1994-03-08 Atlantic Richfield Company Tubing conveyed wellbore straddle packer system
US5326970A (en) * 1991-11-12 1994-07-05 Bayless John R Method and apparatus for logging media of a borehole
US5394141A (en) * 1991-09-12 1995-02-28 Geoservices Method and apparatus for transmitting information between equipment at the bottom of a drilling or production operation and the surface
US5396232A (en) * 1992-10-16 1995-03-07 Schlumberger Technology Corporation Transmitter device with two insulating couplings for use in a borehole
US5425425A (en) * 1994-04-29 1995-06-20 Cardinal Services, Inc. Method and apparatus for removing gas lift valves from side pocket mandrels
US5493288A (en) * 1991-06-28 1996-02-20 Elf Aquitaine Production System for multidirectional information transmission between at least two units of a drilling assembly
US5531270A (en) * 1995-05-04 1996-07-02 Atlantic Richfield Company Downhole flow control in multiple wells
US5535828A (en) * 1994-02-18 1996-07-16 Shell Oil Company Wellbore system with retrievable valve body
US5592438A (en) * 1991-06-14 1997-01-07 Baker Hughes Incorporated Method and apparatus for communicating data in a wellbore and for detecting the influx of gas
US5721538A (en) * 1995-02-09 1998-02-24 Baker Hughes Incorporated System and method of communicating between a plurality of completed zones in one or more production wells
US5723781A (en) * 1996-08-13 1998-03-03 Pruett; Phillip E. Borehole tracer injection and detection method
US5730219A (en) * 1995-02-09 1998-03-24 Baker Hughes Incorporated Production wells having permanent downhole formation evaluation sensors
US5745047A (en) * 1995-01-03 1998-04-28 Shell Oil Company Downhole electricity transmission system
US5782261A (en) * 1995-09-25 1998-07-21 Becker; Billy G. Coiled tubing sidepocket gas lift mandrel system
US5797453A (en) * 1995-10-12 1998-08-25 Specialty Machine & Supply, Inc. Apparatus for kicking over tool and method
US5883516A (en) * 1996-07-31 1999-03-16 Scientific Drilling International Apparatus and method for electric field telemetry employing component upper and lower housings in a well pipestring
US5881807A (en) * 1994-05-30 1999-03-16 Altinex As Injector for injecting a tracer into an oil or gas reservior
US5887657A (en) * 1995-02-09 1999-03-30 Baker Hughes Incorporated Pressure test method for permanent downhole wells and apparatus therefore
US5896924A (en) * 1997-03-06 1999-04-27 Baker Hughes Incorporated Computer controlled gas lift system
US5942990A (en) * 1997-10-24 1999-08-24 Halliburton Energy Services, Inc. Electromagnetic signal repeater and method for use of same
US5941307A (en) * 1995-02-09 1999-08-24 Baker Hughes Incorporated Production well telemetry system and method
US6012016A (en) * 1997-08-29 2000-01-04 Bj Services Company Method and apparatus for managing well production and treatment data
US6012015A (en) * 1995-02-09 2000-01-04 Baker Hughes Incorporated Control model for production wells
US6016845A (en) * 1995-09-28 2000-01-25 Fiber Spar And Tube Corporation Composite spoolable tube
US6037767A (en) * 1995-07-10 2000-03-14 Coflexip Method and device for magnetically testing products with a wall comprising at least one layer of magnetic material
US6061000A (en) * 1994-06-30 2000-05-09 Expro North Sea Limited Downhole data transmission
US6070608A (en) * 1997-08-15 2000-06-06 Camco International Inc. Variable orifice gas lift valve for high flow rates with detachable power source and method of using
US6089322A (en) * 1996-12-02 2000-07-18 Kelley & Sons Group International, Inc. Method and apparatus for increasing fluid recovery from a subterranean formation
US6189621B1 (en) * 1999-08-16 2001-02-20 Smart Drilling And Completion, Inc. Smart shuttles to complete oil and gas wells
US6192983B1 (en) * 1998-04-21 2001-02-27 Baker Hughes Incorporated Coiled tubing strings and installation methods
US20010002621A1 (en) * 1999-04-21 2001-06-07 Vladimir Vaynshteyn Packer
US6334486B1 (en) * 1996-04-01 2002-01-01 Baker Hughes Incorporated Downhole flow control devices
US6344781B1 (en) * 2000-09-14 2002-02-05 Stephen Amram Slenker Broadband microwave choke and a non-conductive carrier therefor
US20020017387A1 (en) * 1999-03-31 2002-02-14 Halliburton Energy Services, Inc. Methods of downhole testing subterranean formations and associated apparatus therefor
US6348876B1 (en) * 2000-06-22 2002-02-19 Halliburton Energy Services, Inc. Burst QAM downhole telemetry system
US6349766B1 (en) * 1998-05-05 2002-02-26 Baker Hughes Incorporated Chemical actuation of downhole tools
US6352109B1 (en) * 1999-03-16 2002-03-05 William G. Buckman, Sr. Method and apparatus for gas lift system for oil and gas wells
US6420976B1 (en) * 1997-12-10 2002-07-16 Abb Seatec Limited Underwater hydrocarbon production systems
US6429784B1 (en) * 1999-02-19 2002-08-06 Dresser Industries, Inc. Casing mounted sensors, actuators and generators
US6515592B1 (en) * 1998-06-12 2003-02-04 Schlumberger Technology Corporation Power and signal transmission using insulated conduit for permanent downhole installations
US20030047317A1 (en) * 2001-09-07 2003-03-13 Jody Powers Deep-set subsurface safety valve assembly
US20030056952A1 (en) * 2000-01-24 2003-03-27 Stegemeier George Leo Tracker injection in a production well
US20030086652A1 (en) * 2001-11-02 2003-05-08 Boudreau Robert A Ceramic waferboard
US6588505B2 (en) * 1999-09-07 2003-07-08 Halliburton Energy Services, Inc. Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation
US20030131991A1 (en) * 2000-05-31 2003-07-17 Hartog Floor Andre Tracer release method for monitoring fluid flow in a well
US6737951B1 (en) * 2002-11-01 2004-05-18 Metglas, Inc. Bulk amorphous metal inductive device
US6747569B2 (en) * 2001-02-02 2004-06-08 Dbi Corporation Downhole telemetry and control system

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917004A (en) 1954-04-30 1959-12-15 Guiberson Corp Method and apparatus for gas lifting fluid from plural zones of production in a well
US3732728A (en) 1971-01-04 1973-05-15 Fitzpatrick D Bottom hole pressure and temperature indicator
US4295795A (en) 1978-03-23 1981-10-20 Texaco Inc. Method for forming remotely actuated gas lift systems and balanced valve systems made thereby
US4630243A (en) 1983-03-21 1986-12-16 Macleod Laboratories, Inc. Apparatus and method for logging wells while drilling
US4545731A (en) 1984-02-03 1985-10-08 Otis Engineering Corporation Method and apparatus for producing a well
US4709234A (en) 1985-05-06 1987-11-24 Halliburton Company Power-conserving self-contained downhole gauge system
US4793414A (en) 1986-11-26 1988-12-27 Chevron Research Company Steam injection profiling
US4771635A (en) 1987-01-29 1988-09-20 Halliburton Company Fluid injector for tracer element well borehole injection
US4790375A (en) 1987-11-23 1988-12-13 Ors Development Corporation Mineral well heating systems
US4886114A (en) 1988-03-18 1989-12-12 Otis Engineering Corporation Electric surface controlled subsurface valve system
US5172717A (en) 1989-12-27 1992-12-22 Otis Engineering Corporation Well control system
US5278758A (en) 1990-04-17 1994-01-11 Baker Hughes Incorporated Method and apparatus for nuclear logging using lithium detector assemblies and gamma ray stripping means
JPH04111127A (en) 1990-08-31 1992-04-13 Toshiba Corp Arithmetic processor
GB9025230D0 (en) 1990-11-20 1991-01-02 Framo Dev Ltd Well completion system
US5251328A (en) 1990-12-20 1993-10-05 At&T Bell Laboratories Predistortion technique for communications systems
GB2253908B (en) 1991-03-21 1995-04-05 Halliburton Logging Services Apparatus for electrically investigating a medium
US5160925C1 (en) 1991-04-17 2001-03-06 Halliburton Co Short hop communication link for downhole mwd system
US5574374A (en) 1991-04-29 1996-11-12 Baker Hughes Incorporated Method and apparatus for interrogating a borehole and surrounding formation utilizing digitally controlled oscillators
US5246860A (en) 1992-01-31 1993-09-21 Union Oil Company Of California Tracer chemicals for use in monitoring subterranean fluids
US5267469A (en) 1992-03-30 1993-12-07 Lagoven, S.A. Method and apparatus for testing the physical integrity of production tubing and production casing in gas-lift wells systems
GB9212685D0 (en) 1992-06-15 1992-07-29 Flight Refueling Ltd Data transfer
FR2695450B1 (en) 1992-09-07 1994-12-16 Geo Res Safety valve control and command cartridge.
CA2164342A1 (en) 1993-06-04 1994-12-22 Norman C. Macleod Method and apparatus for communicating signals from encased borehole
US5353627A (en) 1993-08-19 1994-10-11 Texaco Inc. Passive acoustic detection of flow regime in a multi-phase fluid flow
US5467083A (en) 1993-08-26 1995-11-14 Electric Power Research Institute Wireless downhole electromagnetic data transmission system and method
US5473321A (en) 1994-03-15 1995-12-05 Halliburton Company Method and apparatus to train telemetry system for optimal communications with downhole equipment
US5458200A (en) 1994-06-22 1995-10-17 Atlantic Richfield Company System for monitoring gas lift wells
NO325157B1 (en) 1995-02-09 2008-02-11 Baker Hughes Inc Device for downhole control of well tools in a production well
US5561245A (en) 1995-04-17 1996-10-01 Western Atlas International, Inc. Method for determining flow regime in multiphase fluid flow in a wellbore
US6662875B2 (en) * 2000-01-24 2003-12-16 Shell Oil Company Induction choke for power distribution in piping structure

Patent Citations (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US525663A (en) * 1894-09-04 Sash-fastener
US2083321A (en) * 1935-06-24 1937-06-08 Ici Ltd Calcium sulphate plaster
US2379800A (en) * 1941-09-11 1945-07-03 Texas Co Signal transmission system
US2414719A (en) * 1942-04-25 1947-01-21 Stanolind Oil & Gas Co Transmission system
US3083771A (en) * 1959-05-18 1963-04-02 Jersey Prod Res Co Single tubing string dual installation
US3087545A (en) * 1961-08-09 1963-04-30 Pure Oil Co Method of heating and producing oil wells
US3247904A (en) * 1963-04-01 1966-04-26 Richfield Oil Corp Dual completion tool
US3427989A (en) * 1966-12-01 1969-02-18 Otis Eng Corp Well tools
US3465273A (en) * 1967-12-14 1969-09-02 Hunterdon Transformer Co Toroidal inductor
US3602305A (en) * 1969-12-31 1971-08-31 Schlumberger Technology Corp Retrievable well packer
US3659336A (en) * 1970-01-30 1972-05-02 Electronic Diversified Inc Method of manufacturing an inductive device
US3566963A (en) * 1970-02-25 1971-03-02 Mid South Pump And Supply Co I Well packer
US3793632A (en) * 1971-03-31 1974-02-19 W Still Telemetry system for drill bore holes
US3731728A (en) * 1971-09-27 1973-05-08 Gen Motors Corp Mold apparatus for continuous casting
US3814545A (en) * 1973-01-19 1974-06-04 W Waters Hydrogas lift system
US3837618A (en) * 1973-04-26 1974-09-24 Co Des Freins Et Signaux Westi Electro-pneumatic valve
US3980826A (en) * 1973-09-12 1976-09-14 International Business Machines Corporation Means of predistorting digital signals
US4087781A (en) * 1974-07-01 1978-05-02 Raytheon Company Electromagnetic lithosphere telemetry system
US4068717A (en) * 1976-01-05 1978-01-17 Phillips Petroleum Company Producing heavy oil from tar sands
US4350205A (en) * 1979-03-09 1982-09-21 Schlumberger Technology Corporation Work over methods and apparatus
US4278758A (en) * 1979-07-06 1981-07-14 Drexler Technology Corporation Process for making a reflective data storage medium
US4393485A (en) * 1980-05-02 1983-07-12 Baker International Corporation Apparatus for compiling and monitoring subterranean well-test data
US4468665A (en) * 1981-01-30 1984-08-28 Tele-Drill, Inc. Downhole digital power amplifier for a measurements-while-drilling telemetry system
US4578675A (en) * 1982-09-30 1986-03-25 Macleod Laboratories, Inc. Apparatus and method for logging wells while drilling
US4739325A (en) * 1982-09-30 1988-04-19 Macleod Laboratories, Inc. Apparatus and method for down-hole EM telemetry while drilling
US4596516A (en) * 1983-07-14 1986-06-24 Econolift System, Ltd. Gas lift apparatus having condition responsive gas inlet valve
US4648471A (en) * 1983-11-02 1987-03-10 Schlumberger Technology Corporation Control system for borehole tools
US4576231A (en) * 1984-09-13 1986-03-18 Texaco Inc. Method and apparatus for combating encroachment by in situ treated formations
US4566534A (en) * 1985-02-01 1986-01-28 Camco, Incorporated Solenoid actuated well safety valve
US4662437A (en) * 1985-11-14 1987-05-05 Atlantic Richfield Company Electrically stimulated well production system with flexible tubing conductor
US4681164A (en) * 1986-05-30 1987-07-21 Stacks Ronald R Method of treating wells with aqueous foam
US4738313A (en) * 1987-02-20 1988-04-19 Delta-X Corporation Gas lift optimization
US4839644A (en) * 1987-06-10 1989-06-13 Schlumberger Technology Corp. System and method for communicating signals in a cased borehole having tubing
US4901069A (en) * 1987-07-16 1990-02-13 Schlumberger Technology Corporation Apparatus for electromagnetically coupling power and data signals between a first unit and a second unit and in particular between well bore apparatus and the surface
US4852648A (en) * 1987-12-04 1989-08-01 Ava International Corporation Well installation in which electrical current is supplied for a source at the wellhead to an electrically responsive device located a substantial distance below the wellhead
US4981173A (en) * 1988-03-18 1991-01-01 Otis Engineering Corporation Electric surface controlled subsurface valve system
US4933640A (en) * 1988-12-30 1990-06-12 Vector Magnetics Apparatus for locating an elongated conductive body by electromagnetic measurement while drilling
US5031697A (en) * 1989-03-14 1991-07-16 Shell Oil Company Method for troubleshooting gas-lift wells
US5034371A (en) * 1989-03-27 1991-07-23 Fuji Photo Film Co., Ltd. Thermal transfer image recording method and thermal transfer dye donating material
US5001675A (en) * 1989-09-13 1991-03-19 Teleco Oilfield Services Inc. Phase and amplitude calibration system for electromagnetic propagation based earth formation evaluation instruments
US5176164A (en) * 1989-12-27 1993-01-05 Otis Engineering Corporation Flow control valve system
US5008664A (en) * 1990-01-23 1991-04-16 Quantum Solutions, Inc. Apparatus for inductively coupling signals between a downhole sensor and the surface
US5134285A (en) * 1991-01-15 1992-07-28 Teleco Oilfield Services Inc. Formation density logging mwd apparatus
US5130706A (en) * 1991-04-22 1992-07-14 Scientific Drilling International Direct switching modulation for electromagnetic borehole telemetry
US6208586B1 (en) * 1991-06-14 2001-03-27 Baker Hughes Incorporated Method and apparatus for communicating data in a wellbore and for detecting the influx of gas
US5592438A (en) * 1991-06-14 1997-01-07 Baker Hughes Incorporated Method and apparatus for communicating data in a wellbore and for detecting the influx of gas
US5493288A (en) * 1991-06-28 1996-02-20 Elf Aquitaine Production System for multidirectional information transmission between at least two units of a drilling assembly
US5191326A (en) * 1991-09-05 1993-03-02 Schlumberger Technology Corporation Communications protocol for digital telemetry system
US5331318A (en) * 1991-09-05 1994-07-19 Schlumberger Technology Corporation Communications protocol for digital telemetry system
US5394141A (en) * 1991-09-12 1995-02-28 Geoservices Method and apparatus for transmitting information between equipment at the bottom of a drilling or production operation and the surface
US5230383A (en) * 1991-10-07 1993-07-27 Camco International Inc. Electrically actuated well annulus safety valve
US5326970A (en) * 1991-11-12 1994-07-05 Bayless John R Method and apparatus for logging media of a borehole
US5236048A (en) * 1991-12-10 1993-08-17 Halliburton Company Apparatus and method for communicating electrical signals in a well, including electrical coupling for electric circuits therein
US5216285A (en) * 1992-02-24 1993-06-01 Gunderson, Inc. Freight car with electrical power distribution
US5291947A (en) * 1992-06-08 1994-03-08 Atlantic Richfield Company Tubing conveyed wellbore straddle packer system
US5396232A (en) * 1992-10-16 1995-03-07 Schlumberger Technology Corporation Transmitter device with two insulating couplings for use in a borehole
US5535828A (en) * 1994-02-18 1996-07-16 Shell Oil Company Wellbore system with retrievable valve body
US5425425A (en) * 1994-04-29 1995-06-20 Cardinal Services, Inc. Method and apparatus for removing gas lift valves from side pocket mandrels
US5881807A (en) * 1994-05-30 1999-03-16 Altinex As Injector for injecting a tracer into an oil or gas reservior
US6061000A (en) * 1994-06-30 2000-05-09 Expro North Sea Limited Downhole data transmission
US5745047A (en) * 1995-01-03 1998-04-28 Shell Oil Company Downhole electricity transmission system
US5934371A (en) * 1995-02-09 1999-08-10 Baker Hughes Incorporated Pressure test method for permanent downhole wells and apparatus therefore
US5730219A (en) * 1995-02-09 1998-03-24 Baker Hughes Incorporated Production wells having permanent downhole formation evaluation sensors
US5887657A (en) * 1995-02-09 1999-03-30 Baker Hughes Incorporated Pressure test method for permanent downhole wells and apparatus therefore
US5721538A (en) * 1995-02-09 1998-02-24 Baker Hughes Incorporated System and method of communicating between a plurality of completed zones in one or more production wells
US5937945A (en) * 1995-02-09 1999-08-17 Baker Hughes Incorporated Computer controlled gas lift system
US5941307A (en) * 1995-02-09 1999-08-24 Baker Hughes Incorporated Production well telemetry system and method
US6012015A (en) * 1995-02-09 2000-01-04 Baker Hughes Incorporated Control model for production wells
US5531270A (en) * 1995-05-04 1996-07-02 Atlantic Richfield Company Downhole flow control in multiple wells
US6037767A (en) * 1995-07-10 2000-03-14 Coflexip Method and device for magnetically testing products with a wall comprising at least one layer of magnetic material
US5782261A (en) * 1995-09-25 1998-07-21 Becker; Billy G. Coiled tubing sidepocket gas lift mandrel system
US6016845A (en) * 1995-09-28 2000-01-25 Fiber Spar And Tube Corporation Composite spoolable tube
US5797453A (en) * 1995-10-12 1998-08-25 Specialty Machine & Supply, Inc. Apparatus for kicking over tool and method
US6334486B1 (en) * 1996-04-01 2002-01-01 Baker Hughes Incorporated Downhole flow control devices
US5883516A (en) * 1996-07-31 1999-03-16 Scientific Drilling International Apparatus and method for electric field telemetry employing component upper and lower housings in a well pipestring
US5723781A (en) * 1996-08-13 1998-03-03 Pruett; Phillip E. Borehole tracer injection and detection method
US6089322A (en) * 1996-12-02 2000-07-18 Kelley & Sons Group International, Inc. Method and apparatus for increasing fluid recovery from a subterranean formation
US5896924A (en) * 1997-03-06 1999-04-27 Baker Hughes Incorporated Computer controlled gas lift system
US6070608A (en) * 1997-08-15 2000-06-06 Camco International Inc. Variable orifice gas lift valve for high flow rates with detachable power source and method of using
US6012016A (en) * 1997-08-29 2000-01-04 Bj Services Company Method and apparatus for managing well production and treatment data
US5942990A (en) * 1997-10-24 1999-08-24 Halliburton Energy Services, Inc. Electromagnetic signal repeater and method for use of same
US6420976B1 (en) * 1997-12-10 2002-07-16 Abb Seatec Limited Underwater hydrocarbon production systems
US6192983B1 (en) * 1998-04-21 2001-02-27 Baker Hughes Incorporated Coiled tubing strings and installation methods
US6349766B1 (en) * 1998-05-05 2002-02-26 Baker Hughes Incorporated Chemical actuation of downhole tools
US6515592B1 (en) * 1998-06-12 2003-02-04 Schlumberger Technology Corporation Power and signal transmission using insulated conduit for permanent downhole installations
US6429784B1 (en) * 1999-02-19 2002-08-06 Dresser Industries, Inc. Casing mounted sensors, actuators and generators
US6352109B1 (en) * 1999-03-16 2002-03-05 William G. Buckman, Sr. Method and apparatus for gas lift system for oil and gas wells
US20020017387A1 (en) * 1999-03-31 2002-02-14 Halliburton Energy Services, Inc. Methods of downhole testing subterranean formations and associated apparatus therefor
US20010002621A1 (en) * 1999-04-21 2001-06-07 Vladimir Vaynshteyn Packer
US6189621B1 (en) * 1999-08-16 2001-02-20 Smart Drilling And Completion, Inc. Smart shuttles to complete oil and gas wells
US6588505B2 (en) * 1999-09-07 2003-07-08 Halliburton Energy Services, Inc. Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation
US20030056952A1 (en) * 2000-01-24 2003-03-27 Stegemeier George Leo Tracker injection in a production well
US20030131991A1 (en) * 2000-05-31 2003-07-17 Hartog Floor Andre Tracer release method for monitoring fluid flow in a well
US6348876B1 (en) * 2000-06-22 2002-02-19 Halliburton Energy Services, Inc. Burst QAM downhole telemetry system
US6344781B1 (en) * 2000-09-14 2002-02-05 Stephen Amram Slenker Broadband microwave choke and a non-conductive carrier therefor
US6747569B2 (en) * 2001-02-02 2004-06-08 Dbi Corporation Downhole telemetry and control system
US20030047317A1 (en) * 2001-09-07 2003-03-13 Jody Powers Deep-set subsurface safety valve assembly
US20030086652A1 (en) * 2001-11-02 2003-05-08 Boudreau Robert A Ceramic waferboard
US6737951B1 (en) * 2002-11-01 2004-05-18 Metglas, Inc. Bulk amorphous metal inductive device

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7201226B2 (en) 2004-07-22 2007-04-10 Schlumberger Technology Corporation Downhole measurement system and method
US20060016593A1 (en) * 2004-07-22 2006-01-26 Schlumberger Technology Corporation Downhole Measurement System and Method
US20090266533A1 (en) * 2006-10-24 2009-10-29 Matheus Norbertus Baajiens System for determining sealing in a wellbore
WO2008127390A2 (en) * 2006-11-01 2008-10-23 The Regents Of The University Of California Piezotube borehole seismic source
WO2008127390A3 (en) * 2006-11-01 2008-12-24 Univ California Piezotube borehole seismic source
US8717850B2 (en) 2006-11-01 2014-05-06 The Regents Of The University Of California Piezotube borehole seismic source
US10047594B2 (en) 2012-01-23 2018-08-14 Genie Ip B.V. Heater pattern for in situ thermal processing of a subsurface hydrocarbon containing formation
US9605524B2 (en) 2012-01-23 2017-03-28 Genie Ip B.V. Heater pattern for in situ thermal processing of a subsurface hydrocarbon containing formation
US20150053415A1 (en) * 2013-08-22 2015-02-26 Schlumberger Technology Corporation Wellbore annular safety valve and method
GB2572499B (en) * 2015-06-09 2020-04-01 Wellguard As Apparatus for monitoring at least a portion of a wellbore
GB2572499A (en) * 2015-06-09 2019-10-02 Wellguard As Apparatus for monitoring at least a portion of a wellbore
US10697296B2 (en) 2016-03-24 2020-06-30 Expro North Sea Limited Monitoring systems and methods
US20170275991A1 (en) * 2016-03-24 2017-09-28 Expro North Sea Limited Monitoring systems and methods
US10392935B2 (en) * 2016-03-24 2019-08-27 Expro North Sea Limited Monitoring systems and methods
US11236586B2 (en) 2016-12-30 2022-02-01 Metrol Technology Ltd. Downhole energy harvesting
US11454093B2 (en) 2016-12-30 2022-09-27 Metrol Technology Ltd. Downhole energy harvesting
WO2018122545A1 (en) * 2016-12-30 2018-07-05 Metrol Technology Ltd Downhole energy harvesting
WO2018122547A1 (en) * 2016-12-30 2018-07-05 Metrol Technology Ltd Downhole energy harvesting
US11072999B2 (en) 2016-12-30 2021-07-27 Metrol Technology Ltd. Downhole energy harvesting
AU2016434682B2 (en) * 2016-12-30 2023-08-10 Metrol Technology Ltd Downhole energy harvesting
US11199075B2 (en) 2016-12-30 2021-12-14 Metrol Technology Ltd. Downhole energy harvesting
US11795786B2 (en) 2016-12-30 2023-10-24 Metrol Technology Ltd. Downhole energy harvesting
US11732553B2 (en) 2017-03-31 2023-08-22 Metrol Technology Ltd. Downhole power delivery
US11085272B2 (en) * 2017-03-31 2021-08-10 Metrol Technology Ltd. Powering downhole devices
US11085271B2 (en) 2017-03-31 2021-08-10 Metrol Technology Ltd. Downhole power delivery
GB2587919A (en) * 2018-04-30 2021-04-14 Halliburton Energy Services Inc Packer setting and real-time verification method
GB2587919B (en) * 2018-04-30 2022-06-01 Halliburton Energy Services Inc Packer setting and real-time verification method
AU2018421691B2 (en) * 2018-04-30 2023-09-21 Halliburton Energy Services, Inc. Packer setting and real-time verification method
US11125037B2 (en) * 2018-04-30 2021-09-21 Halliburton Energy Services, Inc. Packer setting and real-time verification method
WO2019212499A1 (en) * 2018-04-30 2019-11-07 Halliburton Energy Services, Inc. Packer setting and real-time verification method
CN112647857A (en) * 2019-10-12 2021-04-13 中国石油化工股份有限公司 Injection-production string and well completion method using same
GB2605806A (en) * 2021-04-13 2022-10-19 Metrol Tech Ltd Casing packer
GB2605806B (en) * 2021-04-13 2023-11-22 Metrol Tech Ltd Casing packer

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